The 100 Book Series Will Continue With Kass Morgan's "Rebellion"

The 100 book trilogy is about to become a tetralogy, as author Kass Morgan is writing another installment of the series that inspired The CW's post-apocalyptic critical darling, a fourth novel to be called The 100: Rebellion.

The 100 television show has diverged significantly from the books, especially in regards to major characters being killed off (most notably Wells, who is still a main character in the novels), but the overall mythology is somewhat similar. The first novel saw 100 juvenile delinquents sent to a possibly uninhabitable Earth from a spacebound society in which all crimes were punishable by death, and then the second novel expanded the universe to reveal "Earthborns" (similar to the show's Grounders) and a sinister operation at Mount Weather. After seemingly tying up those plotlines in the third novel, Morgan will write another installment that follows Clarke and Bellamy as they try to save Wells, Octavia, and Glass (the latter of whom has no TV show counterpart) from a religious cult.

The 100: Rebellion will come out on December 6 of this year, and then publisher Little, Brown Books for Young Readers will release a box set of all four books so new readers can binge them all before the already-confirmed fourth season begins.

Centuries after nuclear war destroyed our planet, humanity struggles to rebuild. It's been a month since the dropships landed and the Colonists joined the Hundred on the ground. The teens, once branded juvenile delinquents, are now leaders among their people.

The Colonists and the Earthborns are celebrating their first holiday together when, to everyone's horror, they're attacked by a group of strangers whose unusual battle cries fill the air. The newcomers kill scores of people, seize prisoners, and pillage crucial supplies. When hotheaded Bellamy and his analytical girlfriend Clarke discover that Wells, Octavia and Glass have been captured, they vow to get them back at all costs. But as they go after their new enemies, Bellamy and Clarke find themselves increasingly at odds, unable to agree on a plan to save their friends.

Meanwhile, Wells, Octavia, and Glass are being slowly brainwashed by their captors, religious fanatics with one goal: to grow their ranks and "heal" the war-ravaged planet… by eliminating everyone else on it.

But centuries of radiation exposure have taken their toll, forcing the cult to take drastic steps to survive. And unless the rescue party arrives soon, the teen captives will face a fate more terrifying than anything they could imagine. In this thrilling fourth installment, the hundred fight to protect the people they love on the dangerous planet they always dreamed of calling home.